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  <div class="headertitle"><div class="title">sysmem.c File Reference</div></div>
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<p>System Memory calls file.  
<a href="#details">More...</a></p>
<div class="textblock"><code>#include &lt;errno.h&gt;</code><br />
<code>#include &lt;stdint.h&gt;</code><br />
</div><table class="memberdecls">
<tr class="heading"><td colspan="2"><h2 id="header-func-members" class="groupheader"><a id="func-members" name="func-members"></a>
Functions</h2></td></tr>
<tr class="memitem:a68125648bcce70b6bb3aa0be50e99700" id="r_a68125648bcce70b6bb3aa0be50e99700"><td class="memItemLeft" align="right" valign="top">void *&#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="#a68125648bcce70b6bb3aa0be50e99700">_sbrk</a> (ptrdiff_t incr)</td></tr>
<tr class="memdesc:a68125648bcce70b6bb3aa0be50e99700"><td class="mdescLeft">&#160;</td><td class="mdescRight"><a class="el" href="#a68125648bcce70b6bb3aa0be50e99700" title="_sbrk() allocates memory to the newlib heap and is used by malloc and others from the C library">_sbrk()</a> allocates memory to the newlib heap and is used by malloc and others from the C library  <br /></td></tr>
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<a name="details" id="details"></a><h2 id="header-details" class="groupheader">Detailed Description</h2>
<div class="textblock"><p>System Memory calls file. </p>
<dl class="section author"><dt>Author</dt><dd>Generated by STM32CubeMX <pre class="fragment">       For more information about which C functions
       need which of these lowlevel functions
       please consult the newlib libc manual
</pre></dd></dl>
<dl class="section attention"><dt>Attention</dt><dd></dd></dl>
<p>Copyright (c) 2024 STMicroelectronics. All rights reserved.</p>
<p>This software is licensed under terms that can be found in the LICENSE file in the root directory of this software component. If no LICENSE file comes with this software, it is provided AS-IS. </p>
</div><a name="doc-func-members" id="doc-func-members"></a><h2 id="header-doc-func-members" class="groupheader">Function Documentation</h2>
<a id="a68125648bcce70b6bb3aa0be50e99700" name="a68125648bcce70b6bb3aa0be50e99700"></a>
<h2 class="memtitle"><span class="permalink"><a href="#a68125648bcce70b6bb3aa0be50e99700">&#9670;&#160;</a></span>_sbrk()</h2>

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          <td class="memname">void * _sbrk </td>
          <td>(</td>
          <td class="paramtype">ptrdiff_t</td>          <td class="paramname"><span class="paramname"><em>incr</em></span></td><td>)</td>
          <td></td>
        </tr>
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<p><a class="el" href="#a68125648bcce70b6bb3aa0be50e99700" title="_sbrk() allocates memory to the newlib heap and is used by malloc and others from the C library">_sbrk()</a> allocates memory to the newlib heap and is used by malloc and others from the C library </p>
<pre class="fragment">* ############################################################################
* #  .data  #  .bss  #       newlib heap       #          MSP stack          #
* #         #        #                         # Reserved by _Min_Stack_Size #
* ############################################################################
* ^-- RAM start      ^-- _end                             _estack, RAM end --^
* </pre><p>This implementation starts allocating at the '_end' linker symbol The '_Min_Stack_Size' linker symbol reserves a memory for the MSP stack The implementation considers '_estack' linker symbol to be RAM end NOTE: If the MSP stack, at any point during execution, grows larger than the reserved size, please increase the '_Min_Stack_Size'.</p>
<dl class="params"><dt>Parameters</dt><dd>
  <table class="params">
    <tr><td class="paramname">incr</td><td>Memory size </td></tr>
  </table>
  </dd>
</dl>
<dl class="section return"><dt>Returns</dt><dd>Pointer to allocated memory </dd></dl>

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